摘要
广西桂平麒麟山重晶石矿床产于著名的凭祥—大黎区域大断裂内。通过对该矿床的岩矿鉴定，于该矿区首次发现了重晶石质糜棱岩。结合宏观地质资料的分析研究，认为矿床的矿石类型多样，计有重晶石型、石英重晶石型、金属硫化物重晶石型等。重晶石矿化具多期性。主期重晶石矿化在断裂硅化作用之后，其后有韧—脆性剪切带构造的叠加改造。在剪切带活动的过程中伴有低温成矿热液的重新活动，新生的张裂隙中又有新的重晶石脉生成。麒麟山重晶石矿床的变形特征部分地反映了凭祥—大黎区域大断裂的活动历史，从产于断裂中矿体的微观特征来看凭祥—大黎断裂为一脆—韧性剪切构造带。
Guipin Qilingshang barite ore deposit was found in the famous Pinxiang-Dali regional major fault. We found first baritic mylonite by rock and mineral determination to this deposit which along with regional geological data's research the ore type of this deposit are varied, which include barite ore, quartz barite ore as well as metal sulphide barite ore. Barite mineralization has many stages. The main stage barite mineralization was after fracture silication, later was superimposed with tenacity-brittle shear fracture. During the process of the shear activity, low temperature hydrothermal ore- forming solution was active again. New barite veins were formed in new tension crack. The deformation characteristic of Qilinshang barite ore deposit have partly showed the active history of Pinxiang-Dali regional major fault. According to the micro feature of the ore bodies found in this fault, Pinxiang-Dali fault should be tenacity-brittle shear fracture zone.
出处
《广西地质》
1998年第2期25-28,共4页
Guangxi Geology
关键词
重晶石矿床
矿石特征
麒麟山
矿石类型
ore type, ore- forming varied stages,tenacity-brittle shear zone,Guipin, Qilinshang.
